Twin screw pump



FIG. 1 is a front, right perspective view of a twin screw pump showing my new design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a left side elevational view thereof.

FIG. 5 is a right side elevational view thereof; and,

FIG. 6 is a top plan view thereof.

The broken lines shown are included for the purpose of illustrating unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a twin screw pump, as shown and described. 